Login/register, forgot-password, reset-password, verify-email, and the
2FA/sessions settings cards all used a bare MuiPaper (1px border, no
shadow) predating this session's theme foundation. MuiPaper itself
stays untouched (it's a lower-level primitive used too broadly across
the app -- menus, popovers -- to safely restyle globally), so these
specific card instances get the same explicit no-border/floating-shadow
treatment already applied screen-by-screen elsewhere this session.
Static shadow value again, not theme.vars.customShadows -- inline sx
callbacks execute against whatever theme is in context, and none of
this repo's tests wrap components in a ThemeProvider (see fc56f94).
Adds a "Trust this device for 30 days" checkbox to the 2FA challenge step,
and a "Trusted devices" section to the 2FA settings card: list devices with
a "this device" badge, per-row revoke, and a confirm-gated "sign out all
other trusted devices" action. Both flows are opt-in and additive -- default
unchecked, so nothing changes for a user who never uses them.
cesnimda